Pith Number

pith:QSC4GP2W

pith:2026:QSC4GP2W56YEEEQOPTAYXRZ3KC

not attested not anchored not stored refs resolved

UNIONS-3500 Weak Lensing: III. 2D Cosmological Constraints in Configuration Space

A. H. Wright, A. Wittje, A. W. McConnachie, C. Daley, C. Murray, E. Magnier, F. Hervas-Peters, H. Hildebrandt, J.-C. Cuillandre, L. van Waerbeke, L. W. K. Goh, M. J. Hudson, M. Kilbinger, S. Fabbro, S. Guerrini, T. de Boer

Cosmic shear from the UNIONS-3500 catalogue yields S_8 = 0.831^{+0.067}_{-0.078} in a flat LCDM model, consistent with Planck within 1 sigma.

arxiv:2605.13547 v1 · 2026-05-13 · astro-ph.CO

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\usepackage{pith}
\pithnumber{QSC4GP2W56YEEEQOPTAYXRZ3KC}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Assuming a flat LCDM model, we obtain constraints on the clustering amplitude of S_8 = 0.831^{+0.067}_{-0.078}, which is consistent with constraints from Planck CMB measurements and precedent cosmic shear results within 1sigma.

C2weakest assumption

The analysis assumes that the source redshift distribution, shear calibration, and covariance matrix are accurately estimated and that residual PSF systematics and B-modes have been sufficiently mitigated; any unaccounted bias in these steps would shift the reported S_8 value.

C3one line summary

UNIONS-3500 weak lensing data yields S_8 = 0.831^{+0.067}_{-0.078} in flat LCDM from 2D cosmic shear, consistent with Planck within 1 sigma.

References

128 extracted · 128 resolved · 42 Pith anchors

[1] R., McCullough, J., et al 2021 · doi:10.1093/mnras/stab2870

[2] 2023 b , http://dx.doi.org/10.1051/0004-6361/202245210 black , 670, A100 https://ui.adsabs.harvard.edu/abs/2023A&A...670A.100L 2023 · doi:10.1051/0004-6361/202245210

[3] ArXiv e-prints(2006) astro-ph/0609591 · doi:10.48550/arxiv.astro-ph/0609591

[4] Large-Scale Cosmic Shear Measurements · doi:10.48550/arxiv.astro-ph/0003338

[5] Survey geometry and the internal consistency of recent cosmic shear measurements · doi:10.1093/mnras/sty1889

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T02:44:23.877744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8485c33f56efb042120e7cc18bc73b509627e0278137e9482d0c804353845ecc

Aliases

arxiv: 2605.13547 · arxiv_version: 2605.13547v1 · doi: 10.48550/arxiv.2605.13547 · pith_short_12: QSC4GP2W56YE · pith_short_16: QSC4GP2W56YEEEQO · pith_short_8: QSC4GP2W

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QSC4GP2W56YEEEQOPTAYXRZ3KC \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8485c33f56efb042120e7cc18bc73b509627e0278137e9482d0c804353845ecc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "124a29212992f9767dcbb244f101b68239a384300c1432ba89807bd2b5416aea",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-05-13T13:55:32Z",
    "title_canon_sha256": "79b57156f97fea450305920b0d4e2cf0200bdb2f3a5e57eedb11b20dc7721882"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13547",
    "kind": "arxiv",
    "version": 1
  }
}